A.O. Smith Boiler 3400 User Manual

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of 83
 
69
CODE DESCRIPTION
37 Program Module application parameter revision
differs from application processor
38 Program Module safety parameter revision differs
from safety processor
39 PCB incompatible with product contained in
Program Module
40 Parameter PCB in Program Module is too large for
product
41 Range PCB in Program Module was too large for
product
42 Alert PCB in Program Module was too large for
product
43 IAS start check was forced on due to IAS enabled
System Operation Faults
44 Low voltage was detected in safety processor
45 High line frequency occurred
46 Low line frequency occurred
47 Invalid subsystem reset request occurred
48 Write large enumerated Modbus register value
was not allowed
49 Maximum cycle count was reached
50 Maximum hours count was reached
51 Illegal Modbus write was attempted
52 Modbus write attempt was rejected (NOT
ALLOWED)
53 Illegal Modbus read was attempted
54 Safety processor brown-out reset occurred
55 Application processor watchdog reset occurred
56 Application processor brown-out reset occurred
57 Safety processor watchdog reset occurred
58 Alarm was reset by the user at the control
Demand/Rate Command Faults
59 Burner control ring rate was > absolute max rate
60 Burner control ring rate was < absolute min rate
61 Burner control ring rate was invalid, % vs. RPM
62 Burner control was ring with no fan request
63 Burner control rate (nonring) was > absolute max
rate
64 Burner control rate (nonring) was < absolute min
rate
65 Burner control rate (nonring) was absent
66 Burner control rate (nonring) was invalid, %
vs.RPM
67 Fan off cycle rate was invalid, % vs. RPM
68 Setpoint was overridden due to sensor fault
69 Modulation was overridden due to sensor fault
70 No demand source was set due to demand priority
conicts
71-73 RESERVED
CODE DESCRIPTION
EE Management Faults
0 None (No alert)
1 Alert PCB was restored from factory defaults
2 Safety conguration parameters were restored
from factory defaults
3 Conguration parameters were restored from
factory defaults
4 Invalid Factory Invisibility PCB was detected
5 Invalid Factory Range PCB was detected
6 Invalid range PCB record has been dropped
7 EEPROM lockout history was initialized
8 Switched application annunciation data blocks
9 Switched application conguration data blocks
10 Conguration was restored from factory defaults
11 Backup conguration settings was restored from
active conguration
12 Annunciation conguration was restored from
factory defaults
13 Annunciation conguration was restored from
backup
14 Safety group verication table was restored from
factory defaults
15 Safety group verication table was updated
16 Invalid Parameter PCB was detected
17 Invalid Range PCB was detected
System Parameter Errors
18 Alarm silence time exceeded maximum
19 Invalid safety group verication table was detected
20 Backdoor Password could not be determined
21 Invalid safety group verication table was not
accepted
22 CRC errors were found in application conguration
data blocks
23 Backup Alert PCB was restored from active one
24 RESERVED
25 Lead Lag operation switch was turned OFF
26 Lead Lag operation switch was turned ON
27 Safety processor was reset
28 Application processor was reset
29 Burner switch was turned OFF
30 Burner switch was turned ON
31 Program Module (PM) was inserted into socket
32 Program Module (PM) was removed from socket
33 Alert PCB was congured
34 Parameter PCB was congured
35 Range PCB was congured
36 Program Module (PM) incompatible with product
was inserted into socket
TABLE 25. ALERTS

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